Apparatus for heating the contents of the bottom cup of a gas holder



y 1934. K. JAGSCHITZ 1,959,534

APPARATUS FOR HEATING THE CONTENTS OF THE BOTTOM CUP OF A GAS HOLDER Filed April 12, 1930 Fig.4

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.Q/ f :1 5: 51 H i? Z FT: 1: :1 1 lyl lnvenlor: l1 owe/w JflGiG/l/TZ Patented May 22, 1934 UNITED STATES 1,959,534 APPARATUS FOR HEATING THE CONTENTS OF THE BOTTOM CUP OF A GAS HOLDER Konrad Jagschitz, Mainz, Germany, assignor to Maschinenfabrik Augsburg-Nurnberg A. G.,

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Nuremberg, Germany, a corporation of Ger- Application April 12, 1930, Serial No. 443,695 In Germany April 24, 1929 in 3 Claims.

In order to avoid irregularities of working with the circulation of the sealing liquid of gas holders of the disk-type having a liquid seal it has alr W ready been proposed to heat the contents of the 5 bottom cup so that also in case of a severe frost the outlets connected to the tar collecting reservoirs cannot become blocked by solidified tar or by ice deposits. The object of this invention is H to produce a device which will overcome these difficulties in a simple and efiicient manner.

In accordance with the invention pipe coils are placed in the proximity of the openings through which the contents of the bottom cups is drawn on into the collecting reservoirs and washers, '1} and previously heated sealing liquid is introduced into such coils or equivalent structure to serve as a heating medium and is circulated through said coils. This heating medium is stored in the NM collecting reservoirs provided for the sealing liquid heated in a known manner and is preferably delivered by means of the known tar circulating pumps which normally force the sealing liquid to the gasholder after the drives to said pumps have been reversed. In consequence thereof it is not necessary to employ special heating means and additional pumps, so that existing gas holders, can without difficulty be fitted with a heating device for the bottom cup, especially since K a heating device for the sealing liquid is in every case already present. Also when new gas holders are being constructed the new device causes only little additional cost, while the advantage is obtained that the aforementioned irregularities of working are safely avoided. The new device has furthermore the special advantage that the bottom cup is not heated directly by a heating device (for instance by gas firing) which would be subject to danger and constructional difilculties but that the actual heating device lies outside of the holder and that only liquid heated outside thereof is passed through the device. This in connection with the circumstance that the sealing liquid acts as the heating liquid simplifies the superintendence of the working of the installation.

In the following the invention will be explained in detail with reference to the accompanying drawing on which are shown in Figure 1 a vertical section and in Figure 2 a plan, partly in section, of the heating device constructed in accordance with this invention.

a is the wall of a gas holder on the bottom of which the bottom cup b is arranged in which the sealing liquid trickling down the wall is collected.

.55 Through the outlet 0 the liquid passes into the f collecting and purifying reservoirsd, e, f of which the first two are provided with a heating coil g. From the last chamber f the sealing liquid during a normal working of the installation is returned I by a so called tar circulating pump h through 56 pipes i, k tothe gas holder and place of use.

According to the invention a pipe coil Z is placed in front of the outlet 0 in the bottom cup b, through which the heating medium is passed. The heating medium consists of the preliminarily b5 heated sealing liquid from the collecting reservoirs e and d and is by means of the pump it conducted to the pipe coil. For this purpose the pipe line 2 is fitted with a branch m, to which a further pipe leading to the pipe coil Z is connected. The drain pipe 11 from the pipe coil is connected to the central collecting chamber 6. By means of valves 0 and p the direction of flow of the sealing liquid can be reversed as required.

The device works in the following manner:

The pump h draws in through the pipe q the heated sealing liquid and forces it through the pipes i, m and through the opened valve 10 (valve 0 is closed) into the heating coil Z. Hereby the liquid of the bottom cup surrounding the heating coil is heated and the ice which may have collected there is melted and the delivery of the contents of the bottom cups to the collecting reservoirs d, e, f remains undisturbed. From the coil the sealing liquid returns through the pipe n to the reservoir e, is here heated again by the heating device g, passes in the known manner to the next following chamber 7 and hence again into the described circuit. When heating of the bottom cups is not required, the valve p is closed and the valve 0 opened, and the pump it works now in the known manner as a conveying means for the circulation of the sealing liquid.

I claim as my invention:

1. Apparatus for heating the contents of the bottom cup of a gas holder comprising a heating coil located in said cup, a reservoir having an outlet opening communicating with said cup for receiving liquid therefrom, means for heating said A reservoir, a pump having its suction side con- 10 nected with said reservoir, a connection between the discharge side of said pump and the inlet side of said coil whereby the latter is charged with heated sealing liquid for heating the contents of said cup, and a conduit connected with said coil and communicating with the reservoir to withdraw from said coil the cooled sealing liquid.

2. Apparatus for heating the contents of the bottom cup of a gas holder, comprising a heating i .0

3. Apparatus as set forth in claim 1, including a branch conduit leading from the connection between the discharge side of the pump and the inlet side of the coil to a seal of the gas holder, and valves in said branch conduit and connection whereby the heated sealing liquid may be caused to flow into said coil or into said seal.

KONRAD J AGSCHITZ. 

